/* Absolute Center Spinner */
.loading {
  position: fixed;
  z-index: 999;
  height: 2em;
  width: 2em;
  overflow: show;
  margin: auto;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;

  /* Transparent Overlay */
  &:before {
	content: '';
	display: block;
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background-color: rgba(0,0,0,0.3);
  }
}

/* :not(:required) hides these rules from IE9 and below */
.loading:not(:required) {
  /* hide "loading..." text */
  font: 0/0 a;
  color: transparent;
  text-shadow: none;
  background-color: transparent;
  border: 0;
}

.loading:not(:required):after {
  content: '';
  display: block;
  font-size: 10px;
  width: 1em;
  height: 1em;
  margin-top: -0.5em;
  animation: spinner 1500ms infinite linear;
  border-radius: 0.5em;
  box-shadow: rgba(0, 0, 0, 0.75) 1.5em 0 0 0, rgba(0, 0, 0, 0.75) 1.1em 1.1em 0 0, rgba(0, 0, 0, 0.75) 0 1.5em 0 0, rgba(0, 0, 0, 0.75) -1.1em 1.1em 0 0, rgba(0, 0, 0, 0.75) -1.5em 0 0 0, rgba(0, 0, 0, 0.75) -1.1em -1.1em 0 0, rgba(0, 0, 0, 0.75) 0 -1.5em 0 0, rgba(0, 0, 0, 0.75) 1.1em -1.1em 0 0;
}

/* Animation */
@-webkit-keyframes spinner {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
@-moz-keyframes spinner {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
@-o-keyframes spinner {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
@keyframes spinner {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
